Brooks' Theory of Heredity

Modification of the pangenesis theory, in which it is a umed that the sperm is the specialized cell into which gemmules are stored, which are given off by the various somatic cells only when a strain, due to ill adaptation, occurs. Thus sex is explained as a differentiation between conservative and radical lines (stability and variation), represented by the female and the male respectively. All, or mainly all, variation originates in the male. The theory claims that some organs, now found rudimentary in the male and well developed in the female (as the mammæ), originated in the former and have been transferred to the latter. Many facts seem to support this theory, but there are exceptions enough to prevent its acceptance unconditionally. Brookweed. Samolus Valerandi . Plant of the Primrose family, native in Europe; known also as Water Pimpernel.